患者，男性，48岁，因吞咽食物易哽噎，胸骨后有异物感和烧灼样痛2个月，经纤维食管镜检
题型：单项选择题 A3型题
问题：
患者，男性，48岁，因吞咽食物易哽噎，胸骨后有异物感和烧灼样痛2个月，经纤维食管镜检查证实为食管癌，准备入院手术治疗。既往吸烟15年。
此病人行食管癌根治术后1个月又出现吞咽不畅，可能的原因是（）
A.喉头水肿
B.肿瘤复发
C.肠套叠
D.吻合口狭窄
E.吻合口溃疡
题型：单项选择题 A3型题
How would you like to wear the same underwear (内衣裤) for weeks? Owing to the work that has gone into developing intelligent materials, this may not be as 41 as it sounds. Self-cleaning clothes have now been created, and these new materials provide 42 resistance to dirt as well as water. As a result, they require much less cleaning than traditional materials.
The creation of self-cleaning clothes provides an example of how nature helps scientists develop better products. This self-cleaning nature is known as the “lotus effect”. The name comes, of course, from the lotus leaves, which are famous for growing in muddy lakes and rivers while remaining almost 43
clean. By observing nature, scientists are 44 the qualities of the lotus leaves to the materials they have engineered. Because of this, some remarkable new products have been 45 . Among them are special windows that are resistant to dirt and water. A special 46 on these windows not only prevents dirt from sticking to their surfaces, but also allows dust to be easily washed off by the rain. In fact, these new windows have already been 47 to some cars. Even when traveling at high speed through rain, these cars never have to use their windshield wipers (雨刮器).
Although we have already seen some practical applications, even more dramatic 48 will be made in the future, and they will, perhaps, change our world completely. Undoubtedly, technology is an important development, and it will have an even bigger 49 on our lives.